JobHistory Server Health Tests

JobHistory Server Audit Pipeline Test

This JobHistory Server health test checks that the Auditing for the JobHistory Server role is getting processed correctly and is not blocked. A failure of this health test may indicate a
problem with the audit pipeline of JobHistory Server process. This test can fail either because the Cloudera Audit Server is not accepting audits, or the Cloudera Manager Agent on the JobHistory
Server host isn't able to send audits because of some network issue. Check the Cloudera Manager Agent logs and Cloudera Audit Server logs for more details. This test can be enabled or disabled using
the Navigator Audit Pipeline Health Check JobHistory Server monitoring setting.

Short Name: Audit Pipeline Test

Property Name

Description

Template Name

Default Value

Unit

Monitoring Period For Audit Failures

The period to review when checking if audits are blocked and not getting processed.

mgmt_navigator_failure_window

20

MINUTES

Navigator Audit Failure Thresholds

The health test thresholds for failures encountered when monitoring audits within a recent period specified by the
mgmt_navigator_failure_window configuration for the role. The value that can be specified for this threshold is the number of bytes of audits data that is left to be sent to audit server.

mgmt_navigator_failure_thresholds

critical:any, warning:never

BYTES

Navigator Audit Pipeline Health Check

Enable test of audit events processing pipeline. This will test if audit events are not getting processed by Audit
Server for a role that generates audit.

mgmt_navigator_status_check_enabled

true

no unit

JobHistory Server File Descriptors

This JobHistory Server health test checks that the number of file descriptors used does not rise above some percentage of the JobHistory Server file descriptor limit. A failure of this
health test may indicate a bug in either Hadoop or Cloudera Manager. Contact Cloudera support. This test can be configured using the File Descriptor Monitoring
Thresholds JobHistory Server monitoring setting.

Short Name: File Descriptors

Property Name

Description

Template Name

Default Value

Unit

File Descriptor Monitoring Thresholds

The health test thresholds of the number of file descriptors used. Specified as a percentage of file descriptor
limit.

jobhistory_fd_thresholds

critical:70.0, warning:50.0

PERCENT

JobHistory Server GC Duration

This JobHistory Server health test checks that the JobHistory Server is not spending too much time performing Java garbage collection. It checks that no more than some percentage of
recent time is spent performing Java garbage collection. A failure of this health test may indicate a capacity planning problem or misconfiguration of the JobHistory Server. This test can be
configured using the Garbage Collection Duration Thresholds and Garbage Collection Duration Monitoring Period JobHistory Server monitoring
settings.

Short Name: GC Duration

Property Name

Description

Template Name

Default Value

Unit

Garbage Collection Duration Monitoring Period

The period to review when computing the moving average of garbage collection time.

jobhistory_gc_duration_window

5

MINUTES

Garbage Collection Duration Thresholds

The health test thresholds for the weighted average time spent in Java garbage collection. Specified as a percentage
of elapsed wall clock time.

The health test thresholds for monitoring of free space on the filesystem that contains this role's heap dump
directory.

heap_dump_directory_free_space_absolute_thresholds

critical:5.36870912E9, warning:1.073741824E10

BYTES

Heap Dump Directory Free Space Monitoring Percentage Thresholds

The health test thresholds for monitoring of free space on the filesystem that contains this role's heap dump
directory. Specified as a percentage of the capacity on that filesystem. This setting is not used if a Heap Dump Directory Free Space Monitoring Absolute Thresholds setting is configured.

heap_dump_directory_free_space_percentage_thresholds

critical:never, warning:never

PERCENT

JobHistory Server Host Health

This JobHistory Server health test factors in the health of the host upon which the JobHistory Server is running. A failure of this test means that the host running the JobHistory Server
is experiencing some problem. See that host's status page for more details.This test can be enabled or disabled using the JobHistory Server Host Health Test JobHistory
Server monitoring setting.

The health test thresholds for monitoring of free space on the filesystem that contains this role's log
directory.

log_directory_free_space_absolute_thresholds

critical:5.36870912E9, warning:1.073741824E10

BYTES

Log Directory Free Space Monitoring Percentage Thresholds

The health test thresholds for monitoring of free space on the filesystem that contains this role's log directory.
Specified as a percentage of the capacity on that filesystem. This setting is not used if a Log Directory Free Space Monitoring Absolute Thresholds setting is configured.

log_directory_free_space_percentage_thresholds

critical:never, warning:never

PERCENT

JobHistory Server Process Status

This JobHistory Server health test checks that the Cloudera Manager Agent on the JobHistory Server host is heart beating correctly and that the process associated with the JobHistory
Server role is in the state expected by Cloudera Manager. A failure of this health test may indicate a problem with the JobHistory Server process, a lack of connectivity to the Cloudera Manager Agent
on the JobHistory Server host, or a problem with the Cloudera Manager Agent. This test can fail either because the JobHistory Server has crashed or because the JobHistory Server will not start or
stop in a timely fashion. Check the JobHistory Server logs for more details. If the test fails because of problems communicating with the Cloudera Manager Agent on the JobHistory Server host, check
the status of the Cloudera Manager Agent by running /etc/init.d/cloudera-scm-agent status on the JobHistory Server host, or look in the Cloudera Manager Agent logs on
the JobHistory Server host for more details. This test can be enabled or disabled using the JobHistory Server Process Health Test JobHistory Server monitoring
setting.

Short Name: Process Status

Property Name

Description

Template Name

Default Value

Unit

JobHistory Server Process Health Test

Enables the health test that the JobHistory Server's process state is consistent with the role configuration

jobhistory_scm_health_enabled

true

no unit

JobHistory Server Swap Memory Usage

This JobHistory Server health test checks the amount of swap memory in use by the role. A failure of this health test may indicate that your machine is overloaded. This test can be
configured using the Process Swap Memory Thresholds monitoring settings.

Short Name: Swap Memory Usage

Property Name

Description

Template Name

Default Value

Unit

Process Swap Memory Thresholds

The health test thresholds on the swap memory usage of the process.

process_swap_memory_thresholds

critical:never, warning:any

BYTES

JobHistory Server Unexpected Exits

This JobHistory Server health test checks that the JobHistory Server has not recently exited unexpectedly. The test returns "Bad" health if the number of unexpected exits exceeds a
critical threshold. For example, if this test is configured with a critical threshold of 1, this test returns "Good" health if there have been no unexpected exits recently. If 1 or more unexpected
exits occured recently, this test returns "Bad" health. The test also indicates whether any of the exits were caused by an OutOfMemory error if the Cloudera Manager Kill When Out
of Memory monitoring setting is enabled. This test can be configured using the Unexpected Exits Thresholds and Unexpected Exits Monitoring
Period JobHistory Server monitoring settings.

Short Name: Unexpected Exits

Property Name

Description

Template Name

Default Value

Unit

Unexpected Exits Monitoring Period

The period to review when computing unexpected exits.

unexpected_exits_window

5

MINUTES

Unexpected Exits Thresholds

The health test thresholds for unexpected exits encountered within a recent period specified by the
unexpected_exits_window configuration for the role.

unexpected_exits_thresholds

critical:any, warning:never

no unit

JobHistory Server Web Server Status

This health test checks that the role's web server is responding quickly to requests by the Cloudera Manager Agent, and that the Cloudera Manager Agent can collect metrics from the web
server. Failure of this health test may indicate a problem with the web server of the JobHistory Server, a misconfiguration of the JobHistory Server, or a problem with the Cloudera Manager Agent.
Consult the Cloudera Manager Agent logs and the logs of the JobHistory Server for more detail. If the test failure message indicates a communication problem, the Cloudera Manager Agent's HTTP
requests to the JobHistory Server's web server are failing or timing out. If the test's failure message indicates an unexpected response, the JobHistory Server's web server responded to the Cloudera
Manager Agent's request, but the response could not be interpreted for some reason. This test can be configured using the Web Metric Collection JobHistory Server
monitoring setting.

Short Name: Web Server Status

Property Name

Description

Template Name

Default Value

Unit

Web Metric Collection

Enables the health test that the Cloudera Manager Agent can successfully contact and gather metrics from the web
server.

jobhistory_web_metric_collection_enabled

true

no unit

Web Metric Collection Duration

The health test thresholds on the duration of the metrics request to the web server.

If this documentation includes code, including but not limited to, code examples, Cloudera makes this available to you under the terms of the Apache License, Version 2.0, including any required
notices. A copy of the Apache License Version 2.0 can be found here.